| /* Copied from gprs_bssgp_pcu.cpp |
| * |
| * Copyright (C) 2012 Ivan Klyuchnikov |
| * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| * Copyright (C) 2013 by Holger Hans Peter Freyther |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #include <tbf.h> |
| #include <gprs_rlcmac.h> |
| #include <gprs_debug.h> |
| |
| extern "C" { |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/talloc.h> |
| } |
| |
| #include <errno.h> |
| #include <string.h> |
| |
| extern void *tall_pcu_ctx; |
| |
| static inline void tbf_update_ms_class(struct gprs_rlcmac_tbf *tbf, |
| const uint8_t ms_class) |
| { |
| if (!tbf->ms_class && ms_class) |
| tbf->ms_class = ms_class; |
| } |
| |
| static inline void tbf_assign_imsi(struct gprs_rlcmac_tbf *tbf, |
| const char *imsi) |
| { |
| strncpy(tbf->meas.imsi, imsi, sizeof(tbf->meas.imsi) - 1); |
| } |
| |
| static struct gprs_rlcmac_tbf *tbf_lookup_dl(const uint32_t tlli, const char *imsi) |
| { |
| /* TODO: look up by IMSI first, then tlli, then old_tlli */ |
| return tbf_by_tlli(tlli, GPRS_RLCMAC_DL_TBF); |
| } |
| |
| static int tbf_append_data(struct gprs_rlcmac_tbf *tbf, |
| struct gprs_rlcmac_bts *bts, |
| const uint8_t ms_class, |
| const uint16_t pdu_delay_csec, |
| const uint8_t *data, const uint16_t len) |
| { |
| LOGP(DRLCMAC, LOGL_INFO, "TBF: APPEND TFI: %u TLLI: 0x%08x\n", tbf->tfi, tbf->tlli); |
| if (tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE)) { |
| LOGP(DRLCMAC, LOGL_DEBUG, "TBF in WAIT RELEASE state " |
| "(T3193), so reuse TBF\n"); |
| memcpy(tbf->llc_frame, data, len); |
| tbf->llc_length = len; |
| /* reset rlc states */ |
| memset(&tbf->dir.dl, 0, sizeof(tbf->dir.dl)); |
| /* keep to flags */ |
| tbf->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; |
| tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
| tbf_update_ms_class(tbf, ms_class); |
| tbf_update(tbf); |
| gprs_rlcmac_trigger_downlink_assignment(bts, tbf, tbf, NULL); |
| } else { |
| /* the TBF exists, so we must write it in the queue |
| * we prepend lifetime in front of PDU */ |
| struct timeval *tv; |
| struct msgb *llc_msg = msgb_alloc(len + sizeof(*tv), |
| "llc_pdu_queue"); |
| if (!llc_msg) |
| return -ENOMEM; |
| tv = (struct timeval *)msgb_put(llc_msg, sizeof(*tv)); |
| |
| uint16_t delay_csec; |
| if (bts->force_llc_lifetime) |
| delay_csec = bts->force_llc_lifetime; |
| else |
| delay_csec = pdu_delay_csec; |
| /* keep timestap at 0 for infinite delay */ |
| if (delay_csec != 0xffff) { |
| /* calculate timestamp of timeout */ |
| gettimeofday(tv, NULL); |
| tv->tv_usec += (delay_csec % 100) * 10000; |
| tv->tv_sec += delay_csec / 100; |
| if (tv->tv_usec > 999999) { |
| tv->tv_usec -= 1000000; |
| tv->tv_sec++; |
| } |
| } |
| memcpy(msgb_put(llc_msg, len), data, len); |
| msgb_enqueue(&tbf->llc_queue, llc_msg); |
| tbf_update_ms_class(tbf, ms_class); |
| } |
| |
| return 0; |
| } |
| |
| static int tbf_new_dl_assignment(struct gprs_rlcmac_bts *bts, |
| const char *imsi, |
| const uint32_t tlli, const uint8_t ms_class, |
| const uint8_t *data, const uint16_t len) |
| { |
| uint8_t trx, ta, ss; |
| int8_t use_trx; |
| struct gprs_rlcmac_tbf *old_tbf, *tbf; |
| int8_t tfi; /* must be signed */ |
| int rc; |
| |
| /* check for uplink data, so we copy our informations */ |
| #warning "Do the same look up for IMSI, TLLI and OLD_TLLI" |
| #warning "Refactor the below lines... into a new method" |
| tbf = tbf_by_tlli(tlli, GPRS_RLCMAC_UL_TBF); |
| if (tbf && tbf->dir.ul.contention_resolution_done |
| && !tbf->dir.ul.final_ack_sent) { |
| use_trx = tbf->trx_no; |
| ta = tbf->ta; |
| ss = 0; |
| old_tbf = tbf; |
| } else { |
| use_trx = -1; |
| /* we already have an uplink TBF, so we use that TA */ |
| if (tbf) |
| ta = tbf->ta; |
| else { |
| /* recall TA */ |
| rc = recall_timing_advance(tlli); |
| if (rc < 0) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "TA unknown" |
| ", assuming 0\n"); |
| ta = 0; |
| } else |
| ta = rc; |
| } |
| ss = 1; /* PCH assignment only allows one timeslot */ |
| old_tbf = NULL; |
| } |
| |
| // Create new TBF (any TRX) |
| #warning "Copy and paste with alloc_ul_tbf" |
| tfi = tfi_find_free(bts, GPRS_RLCMAC_DL_TBF, &trx, use_trx); |
| if (tfi < 0) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
| /* FIXME: send reject */ |
| return -EBUSY; |
| } |
| /* set number of downlink slots according to multislot class */ |
| tbf = tbf_alloc(bts, tbf, GPRS_RLCMAC_DL_TBF, tfi, trx, ms_class, ss); |
| if (!tbf) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); |
| /* FIXME: send reject */ |
| return -EBUSY; |
| } |
| tbf->tlli = tlli; |
| tbf->tlli_valid = 1; |
| tbf->ta = ta; |
| |
| LOGP(DRLCMAC, LOGL_DEBUG, |
| "TBF: [DOWNLINK] START TFI: %d TLLI: 0x%08x \n", |
| tbf->tfi, tbf->tlli); |
| |
| /* new TBF, so put first frame */ |
| memcpy(tbf->llc_frame, data, len); |
| tbf->llc_length = len; |
| |
| /* trigger downlink assignment and set state to ASSIGN. |
| * we don't use old_downlink, so the possible uplink is used |
| * to trigger downlink assignment. if there is no uplink, |
| * AGCH is used. */ |
| gprs_rlcmac_trigger_downlink_assignment(bts, tbf, old_tbf, imsi); |
| |
| /* store IMSI for debugging purpose. TODO: it is more than debugging */ |
| tbf_assign_imsi(tbf, imsi); |
| return 0; |
| } |
| |
| /** |
| * TODO: split into unit test-able parts... |
| */ |
| int tbf_handle(struct gprs_rlcmac_bts *bts, |
| const uint32_t tlli, const char *imsi, |
| const uint8_t ms_class, const uint16_t delay_csec, |
| const uint8_t *data, const uint16_t len) |
| { |
| struct gprs_rlcmac_tbf *tbf; |
| |
| /* check for existing TBF */ |
| tbf = tbf_lookup_dl(tlli, imsi); |
| if (tbf) { |
| int rc = tbf_append_data(tbf, bts, ms_class, |
| delay_csec, data, len); |
| if (rc >= 0) |
| tbf_assign_imsi(tbf, imsi); |
| return rc; |
| } |
| |
| return tbf_new_dl_assignment(bts, imsi, tlli, ms_class, data, len); |
| } |
| |
| struct gprs_rlcmac_tbf *tbf_alloc_ul(struct gprs_rlcmac_bts *bts, |
| int8_t use_trx, uint8_t ms_class, |
| uint32_t tlli, uint8_t ta, struct gprs_rlcmac_tbf *dl_tbf) |
| { |
| uint8_t trx; |
| struct gprs_rlcmac_tbf *tbf; |
| uint8_t tfi; |
| |
| #warning "Copy and paste with tbf_new_dl_assignment" |
| /* create new TBF, use sme TRX as DL TBF */ |
| tfi = tfi_find_free(bts, GPRS_RLCMAC_UL_TBF, &trx, use_trx); |
| if (tfi < 0) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); |
| /* FIXME: send reject */ |
| return NULL; |
| } |
| /* use multislot class of downlink TBF */ |
| tbf = tbf_alloc(bts, dl_tbf, GPRS_RLCMAC_UL_TBF, tfi, trx, ms_class, 0); |
| if (!tbf) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); |
| /* FIXME: send reject */ |
| return NULL; |
| } |
| tbf->tlli = tlli; |
| tbf->tlli_valid = 1; /* no contention resolution */ |
| tbf->dir.ul.contention_resolution_done = 1; |
| tbf->ta = ta; /* use current TA */ |
| tbf_new_state(tbf, GPRS_RLCMAC_ASSIGN); |
| tbf->state_flags |= (1 << GPRS_RLCMAC_FLAG_PACCH); |
| tbf_timer_start(tbf, 3169, bts->t3169, 0); |
| |
| return tbf; |
| } |
| |
| static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
| { |
| struct gprs_rlcmac_pdch *pdch; |
| int ts; |
| |
| if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| tbf->trx->ul_tbf[tbf->tfi] = NULL; |
| for (ts = 0; ts < 8; ts++) { |
| pdch = tbf->pdch[ts]; |
| if (pdch) |
| pdch->ul_tbf[tbf->tfi] = NULL; |
| tbf->pdch[ts] = NULL; |
| } |
| } else { |
| tbf->trx->dl_tbf[tbf->tfi] = NULL; |
| for (ts = 0; ts < 8; ts++) { |
| pdch = tbf->pdch[ts]; |
| if (pdch) |
| pdch->dl_tbf[tbf->tfi] = NULL; |
| tbf->pdch[ts] = NULL; |
| } |
| } |
| } |
| |
| void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| { |
| struct msgb *msg; |
| |
| /* Give final measurement report */ |
| gprs_rlcmac_rssi_rep(tbf); |
| gprs_rlcmac_lost_rep(tbf); |
| |
| debug_diagram(tbf->diag, "+---------------+"); |
| debug_diagram(tbf->diag, "| THE END |"); |
| debug_diagram(tbf->diag, "+---------------+"); |
| LOGP(DRLCMAC, LOGL_INFO, "Free %s TBF=%d with TLLI=0x%08x.\n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
| tbf->tlli); |
| if (tbf->ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE) |
| LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending uplink " |
| "assignment. This may not happen, because the " |
| "assignment message never gets transmitted. Please " |
| "be shure not to free in this state. PLEASE FIX!\n"); |
| if (tbf->dl_ass_state != GPRS_RLCMAC_DL_ASS_NONE) |
| LOGP(DRLCMAC, LOGL_ERROR, "Software error: Pending downlink " |
| "assignment. This may not happen, because the " |
| "assignment message never gets transmitted. Please " |
| "be shure not to free in this state. PLEASE FIX!\n"); |
| tbf_timer_stop(tbf); |
| while ((msg = msgb_dequeue(&tbf->llc_queue))) |
| msgb_free(msg); |
| tbf_unlink_pdch(tbf); |
| llist_del(&tbf->list); |
| LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF ends here **********\n"); |
| talloc_free(tbf); |
| } |
| |
| int tbf_update(struct gprs_rlcmac_tbf *tbf) |
| { |
| struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; |
| struct gprs_rlcmac_tbf *ul_tbf = NULL; |
| int rc; |
| |
| LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF update **********\n"); |
| |
| if (tbf->direction != GPRS_RLCMAC_DL_TBF) |
| return -EINVAL; |
| |
| if (!tbf->ms_class) { |
| LOGP(DRLCMAC, LOGL_DEBUG, "- Cannot update, no class\n"); |
| return -EINVAL; |
| } |
| |
| ul_tbf = tbf_by_tlli(tbf->tlli, GPRS_RLCMAC_UL_TBF); |
| |
| tbf_unlink_pdch(tbf); |
| rc = bts->alloc_algorithm(bts, ul_tbf, tbf, bts->alloc_algorithm_curst, 0); |
| /* if no ressource */ |
| if (rc < 0) { |
| LOGP(DRLCMAC, LOGL_ERROR, "No ressource after update???\n"); |
| return -rc; |
| } |
| |
| return 0; |
| } |
| |
| int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| { |
| if (tbf->control_ts == 0xff) |
| LOGP(DRLCMAC, LOGL_INFO, "- Setting Control TS %d\n", |
| tbf->first_common_ts); |
| else if (tbf->control_ts != tbf->first_common_ts) |
| LOGP(DRLCMAC, LOGL_INFO, "- Changing Control TS %d\n", |
| tbf->first_common_ts); |
| tbf->control_ts = tbf->first_common_ts; |
| |
| return 0; |
| } |
| |
| static const char *tbf_state_name[] = { |
| "NULL", |
| "ASSIGN", |
| "FLOW", |
| "FINISHED", |
| "WAIT RELEASE", |
| "RELEASING", |
| }; |
| |
| void tbf_new_state(struct gprs_rlcmac_tbf *tbf, |
| enum gprs_rlcmac_tbf_state state) |
| { |
| debug_diagram(tbf->diag, "->%s", tbf_state_name[state]); |
| LOGP(DRLCMAC, LOGL_DEBUG, "%s TBF=%d changes state from %s to %s\n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
| tbf_state_name[tbf->state], tbf_state_name[state]); |
| tbf->set_state(state); |
| } |
| |
| void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T, |
| unsigned int seconds, unsigned int microseconds) |
| { |
| if (!osmo_timer_pending(&tbf->timer)) |
| LOGP(DRLCMAC, LOGL_DEBUG, "Starting %s TBF=%d timer %u.\n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| tbf->tfi, T); |
| else |
| LOGP(DRLCMAC, LOGL_DEBUG, "Restarting %s TBF=%d timer %u " |
| "while old timer %u pending \n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| tbf->tfi, T, tbf->T); |
| |
| tbf->T = T; |
| tbf->num_T_exp = 0; |
| |
| /* Tunning timers can be safely re-scheduled. */ |
| tbf->timer.data = tbf; |
| tbf->timer.cb = &tbf_timer_cb; |
| |
| osmo_timer_schedule(&tbf->timer, seconds, microseconds); |
| } |
| |
| void tbf_timer_stop(struct gprs_rlcmac_tbf *tbf) |
| { |
| if (osmo_timer_pending(&tbf->timer)) { |
| LOGP(DRLCMAC, LOGL_DEBUG, "Stopping %s TBF=%d timer %u.\n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| tbf->tfi, tbf->T); |
| osmo_timer_del(&tbf->timer); |
| } |
| } |
| |
| /* lookup TBF Entity (by TFI) */ |
| struct gprs_rlcmac_tbf *tbf_by_tfi(struct gprs_rlcmac_bts *bts, |
| uint8_t tfi, uint8_t trx, enum gprs_rlcmac_tbf_direction dir) |
| { |
| struct gprs_rlcmac_tbf *tbf; |
| |
| if (tfi >= 32 || trx >= 8) |
| return NULL; |
| |
| if (dir == GPRS_RLCMAC_UL_TBF) |
| tbf = bts->trx[trx].ul_tbf[tfi]; |
| else |
| tbf = bts->trx[trx].dl_tbf[tfi]; |
| if (!tbf) |
| return NULL; |
| |
| if (tbf->state_is_not(GPRS_RLCMAC_RELEASING)) |
| return tbf; |
| |
| return NULL; |
| } |
| |
| /* search for active downlink or uplink tbf */ |
| struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli, |
| enum gprs_rlcmac_tbf_direction dir) |
| { |
| struct gprs_rlcmac_tbf *tbf; |
| if (dir == GPRS_RLCMAC_UL_TBF) { |
| llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| && tbf->tlli == tlli && tbf->tlli_valid) |
| return tbf; |
| } |
| } else { |
| llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| && tbf->tlli == tlli) |
| return tbf; |
| } |
| } |
| return NULL; |
| } |
| |
| struct gprs_rlcmac_tbf *tbf_by_poll_fn(uint32_t fn, uint8_t trx, uint8_t ts) |
| { |
| struct gprs_rlcmac_tbf *tbf; |
| |
| /* only one TBF can poll on specific TS/FN, because scheduler can only |
| * schedule one downlink control block (with polling) at a FN per TS */ |
| llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
| && tbf->poll_fn == fn && tbf->trx_no == trx |
| && tbf->control_ts == ts) |
| return tbf; |
| } |
| llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| if (tbf->state_is_not(GPRS_RLCMAC_RELEASING) |
| && tbf->poll_state == GPRS_RLCMAC_POLL_SCHED |
| && tbf->poll_fn == fn && tbf->trx_no == trx |
| && tbf->control_ts == ts) |
| return tbf; |
| } |
| return NULL; |
| } |
| |
| struct gprs_rlcmac_tbf *tbf_alloc(struct gprs_rlcmac_bts *bts, |
| struct gprs_rlcmac_tbf *old_tbf, enum gprs_rlcmac_tbf_direction dir, |
| uint8_t tfi, uint8_t trx, |
| uint8_t ms_class, uint8_t single_slot) |
| { |
| struct gprs_rlcmac_tbf *tbf; |
| int rc; |
| |
| #ifdef DEBUG_DIAGRAM |
| /* hunt for first free number in diagram */ |
| int diagram_num; |
| for (diagram_num = 0; ; diagram_num++) { |
| llist_for_each_entry(tbf, &gprs_rlcmac_ul_tbfs, list) { |
| if (tbf->diag == diagram_num) |
| goto next_diagram; |
| } |
| llist_for_each_entry(tbf, &gprs_rlcmac_dl_tbfs, list) { |
| if (tbf->diag == diagram_num) |
| goto next_diagram; |
| } |
| break; |
| next_diagram: |
| continue; |
| } |
| #endif |
| |
| LOGP(DRLCMAC, LOGL_DEBUG, "********** TBF starts here **********\n"); |
| LOGP(DRLCMAC, LOGL_INFO, "Allocating %s TBF: TFI=%d TRX=%d " |
| "MS_CLASS=%d\n", (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", |
| tfi, trx, ms_class); |
| |
| if (trx >= 8 || tfi >= 32) |
| return NULL; |
| |
| tbf = talloc_zero(tall_pcu_ctx, struct gprs_rlcmac_tbf); |
| if (!tbf) |
| return NULL; |
| |
| #ifdef DEBUG_DIAGRAM |
| tbf->diag = diagram_num; |
| #endif |
| tbf->direction = dir; |
| tbf->tfi = tfi; |
| tbf->trx_no = trx; |
| tbf->trx = &bts->trx[trx]; |
| tbf->arfcn = bts->trx[trx].arfcn; |
| tbf->ms_class = ms_class; |
| tbf->ws = 64; |
| tbf->sns = 128; |
| /* select algorithm */ |
| rc = bts->alloc_algorithm(bts, old_tbf, tbf, bts->alloc_algorithm_curst, |
| single_slot); |
| /* if no ressource */ |
| if (rc < 0) { |
| talloc_free(tbf); |
| return NULL; |
| } |
| /* assign control ts */ |
| tbf->control_ts = 0xff; |
| rc = tbf_assign_control_ts(tbf); |
| /* if no ressource */ |
| if (rc < 0) { |
| talloc_free(tbf); |
| return NULL; |
| } |
| |
| /* set timestamp */ |
| gettimeofday(&tbf->meas.dl_bw_tv, NULL); |
| gettimeofday(&tbf->meas.rssi_tv, NULL); |
| gettimeofday(&tbf->meas.dl_loss_tv, NULL); |
| |
| INIT_LLIST_HEAD(&tbf->llc_queue); |
| if (dir == GPRS_RLCMAC_UL_TBF) |
| llist_add(&tbf->list, &gprs_rlcmac_ul_tbfs); |
| else |
| llist_add(&tbf->list, &gprs_rlcmac_dl_tbfs); |
| |
| debug_diagram(tbf->diag, "+-----------------+"); |
| debug_diagram(tbf->diag, "|NEW %s TBF TFI=%2d|", |
| (dir == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tfi); |
| debug_diagram(tbf->diag, "+-----------------+"); |
| |
| return tbf; |
| } |
| |
| void tbf_timer_cb(void *_tbf) |
| { |
| struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
| |
| LOGP(DRLCMAC, LOGL_DEBUG, "%s TBF=%d timer %u expired.\n", |
| (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, |
| tbf->T); |
| |
| tbf->num_T_exp++; |
| |
| switch (tbf->T) { |
| #ifdef DEBUG_DL_ASS_IDLE |
| case 1234: |
| gprs_rlcmac_trigger_downlink_assignment(tbf, NULL, debug_imsi); |
| break; |
| #endif |
| case 0: /* assignment */ |
| if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) { |
| if (tbf->state_is(GPRS_RLCMAC_ASSIGN)) { |
| LOGP(DRLCMAC, LOGL_NOTICE, "Releasing due to " |
| "PACCH assignment timeout.\n"); |
| tbf_free(tbf); |
| } else |
| LOGP(DRLCMAC, LOGL_ERROR, "Error: TBF is not " |
| "in assign state\n"); |
| } |
| if ((tbf->state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
| /* change state to FLOW, so scheduler will start transmission */ |
| tbf->dir.dl.wait_confirm = 0; |
| if (tbf->state_is(GPRS_RLCMAC_ASSIGN)) { |
| tbf_new_state(tbf, GPRS_RLCMAC_FLOW); |
| tbf_assign_control_ts(tbf); |
| } else |
| LOGP(DRLCMAC, LOGL_NOTICE, "Continue flow after " |
| "IMM.ASS confirm\n"); |
| } |
| break; |
| case 3169: |
| case 3191: |
| case 3195: |
| LOGP(DRLCMAC, LOGL_NOTICE, "TBF T%d timeout during " |
| "transsmission\n", tbf->T); |
| tbf->rlcmac_diag(); |
| /* fall through */ |
| case 3193: |
| if (tbf->T == 3193) |
| debug_diagram(tbf->diag, "T3193 timeout"); |
| LOGP(DRLCMAC, LOGL_DEBUG, "TBF will be freed due to timeout\n"); |
| /* free TBF */ |
| tbf_free(tbf); |
| break; |
| default: |
| LOGP(DRLCMAC, LOGL_ERROR, "Timer expired in unknown mode: %u\n", |
| tbf->T); |
| } |
| } |
| |
| int gprs_rlcmac_tbf::rlcmac_diag() |
| { |
| if ((state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on CCCH\n"); |
| if ((state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- Assignment was on PACCH\n"); |
| if ((state_flags & (1 << GPRS_RLCMAC_FLAG_UL_DATA))) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- Uplink data was received\n"); |
| else if (direction == GPRS_RLCMAC_UL_TBF) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- No uplink data received yet\n"); |
| if ((state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- Downlink ACK was received\n"); |
| else if (direction == GPRS_RLCMAC_DL_TBF) |
| LOGP(DRLCMAC, LOGL_NOTICE, "- No downlink ACK received yet\n"); |
| |
| return 0; |
| } |
| |
| void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_trx *trx) |
| { |
| for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| struct gprs_rlcmac_tbf *tbf; |
| |
| tbf = trx->ul_tbf[tfi]; |
| if (tbf) |
| tbf_free(tbf); |
| tbf = trx->dl_tbf[tfi]; |
| if (tbf) |
| tbf_free(tbf); |
| } |
| } |
| |
| void gprs_rlcmac_tbf::free_all(struct gprs_rlcmac_pdch *pdch) |
| { |
| for (uint8_t tfi = 0; tfi < 32; tfi++) { |
| struct gprs_rlcmac_tbf *tbf; |
| |
| tbf = pdch->ul_tbf[tfi]; |
| if (tbf) |
| tbf_free(tbf); |
| tbf = pdch->dl_tbf[tfi]; |
| if (tbf) |
| tbf_free(tbf); |
| } |
| } |